What he seems to be trying to help with here is something known as Poe’s law – the idea that it can be hard to tell between a troll and an actual crazy or stupid person, because some people really are that crazy/stupid. Unfortunately his cues don’t really help that much.

Yeah that read more like “criticisms of commenters on my blog posts who annoy me.” I’m guessing he doesn’t handle differences of opinion very well (though I’m sure he does run into lots of people who express it poorly or with hostility, as we all do). Not a great read though.